CMB-073-11D1B-W-A/07 Equivalent & Substitute Parts

Part Overview

The CMB-073-11D1B-W-A/07 is a thermal circuit breaker manufactured by Carling Technologies, rated for 7A at 250V AC and 32V DC. This single-pole, panel-mount device features push-to-reset actuation and is designed for overcurrent protection in electrical systems. The part maintains Active product status and carries multiple international approvals including CE, cUL, TUV, UL1077, and UL1500 certifications. Substitute parts are identified when equivalent electrical and mechanical parameters are required for component replacement or design flexibility.

Substiute Parts

CMB-073-11D1B-W-A/07

Carling TechnologiesIn Stock: 795CMB-073-11D1B-W-A/07 Datasheet

Current PartRFQ

CBW57-EJ-7A

OptiFuseIn Stock: 1957CBW57-EJ-7A Datasheet

Parametric EquivalentRFQ

CBW57-EL4-7A

OptiFuseIn Stock: 2075CBW57-EL4-7A Datasheet

Parametric EquivalentRFQ

CBW57-ES-7A-5H

OptiFuseIn Stock: 2494CBW57-ES-7A-5H Datasheet

Parametric EquivalentRFQ

CBW57-HS-7A-5C

OptiFuseIn Stock: 1288CBW57-HS-7A-5C Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CMB-073-11D1B-W-A/07 are identified based on the following critical parameters that must align for functional equivalence:

Matching Parameters (Required for Substitution):

• Current Rating: 7A
• Voltage Rating (AC): 250V
• Mounting Type: Panel Mount
• Breaker Type: Thermal
• Actuator Type: Push to Reset
• Number of Poles: 1
• RoHS Compliance: ROHS3 Compliant

Allowable Variation:

• Voltage Rating (DC): The main part is rated 32V DC. Substitute parts rated at 50V DC are acceptable as this represents a higher voltage capability and maintains backward compatibility in applications requiring 32V DC operation.

All identified substitute parts are manufactured by OptiFuse and belong to the CBW57 series. Each substitute maintains Active product status and carries relevant international approvals.

Parameter Comparison

Engineering Selection Recommendations

All four OptiFuse CBW57 series substitutes maintain Active product status and carry international regulatory approvals including cURus, UL 1077, and UL 1500 certifications. The substitutes are functionally equivalent to the CMB-073-11D1B-W-A/07 across all critical electrical and mechanical parameters.

The primary distinction among the four substitute options is the specific variant designation (EJ, EL4, ES, HS), which reflects different connector or terminal configurations within the CBW57 series. Selection among these variants depends on the specific connector or terminal interface requirements of the application.

All substitutes demonstrate higher DC voltage capability (50V versus 32V), which provides additional operational margin in DC applications while maintaining full compatibility with 32V DC systems.

Frequently Asked Questions (FAQ)

Q: Can OptiFuse CBW57 series breakers directly replace the Carling CMB-073-11D1B-W-A/07?

A: Yes. The CBW57-EJ-7A, CBW57-EL4-7A, CBW57-ES-7A-5H, and CBW57-HS-7A-5C all match the critical electrical parameters (7A, 250V AC, panel mount, thermal, push-to-reset, single-pole) and mechanical mounting requirements. The higher DC voltage rating (50V versus 32V) represents an acceptable variation that maintains backward compatibility.

Q: What is the difference between the four OptiFuse substitute part numbers?

A: The four CBW57 variants (EJ, EL4, ES, HS) represent different connector or terminal configurations within the same electrical specification family. Selection among these variants is determined by the specific terminal interface requirements of the application circuit.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All four OptiFuse substitutes carry ROHS3 compliance certification, matching the environmental compliance status of the original CMB-073-11D1B-W-A/07.

Q: What certifications do the substitute parts carry?

A: The OptiFuse CBW57 series substitutes carry cURus, IP 40, SAE J1171, UL 1077, and UL 1500 approvals. The original Carling part carries CE, cUL, TUV, UL1077, and UL1500 approvals. Both sets of certifications satisfy international regulatory requirements for thermal circuit breakers.

Q: Is the higher DC voltage rating (50V versus 32V) on the substitutes a concern?

A: No. A higher voltage rating indicates greater electrical capability and does not create compatibility issues in applications designed for 32V DC operation. The substitute parts operate safely and effectively in all applications where the original 32V-rated part was specified.

Q: What is the inventory status of these substitute parts?

A: CBW57-ES-7A-5H has the highest inventory at 2482 pieces. CBW57-EL4-7A has 1998 pieces, CBW57-EJ-7A has 1884 pieces, and CBW57-HS-7A-5C has 1197 pieces. All substitutes are available as new original stock.